Blood groups and natural selection.
D000017:ABO Blood-Group System; D001787:Blood Group Incompatibility; D003968:Diarrhea, Infantile / Q000235:genetics; D005823:Genetics; D006801:Humans; D066298:In Vitro Techniques; D013587:Syphilis / Q000235:genetics; D014376:Tuberculosis / Q000235:genetics; D014777:Virus Diseases / Q000235:genetics
D000017:ABO Blood-Group System